Ten-year-old Samantha Hansen is a mad scientist. But not the crazy kindÃ1she doesnÆt blow stuff up or mix potions or dissect bugs. She just loves scienceÃ1especially rocksÃ1and figuring out how the world around her works. But there are some things there just isnÆt a scientific answer for. Like, why canÆt her bossy big sister keep her hands off SamÆs rock collection? And why canÆt Sam control her temper? There are some bigger questions, too, like why did her father have to die? And why wonÆt her mom talk about him anymore? When SamÆs mom announces a family trip to the Grand Canyon, itÆs a dream come true. But itÆs also a challenge: If Sam canÆt learn to calm down and ignore her irritating sister, sheÆs going to miss her chance to see one of the worldÆs biggest rocks and maybe find the answers to some of her questions. Samantha Hansen Has Rocks in Her Headáis a hilarious and touching debut that introduces an exuberant new character who studies the world around her as she discovers what is in her own heart.